The British Parliament passed a law granting independence in July 1947. The law gave people only one month to decide which country they wanted to live in and to move there. As millions of people began to move, more violence broke out.
Calderas form when an enormous magma chamber under, what was probably a pretty ginormous volcano, empties and collapses, causing the land above it to collapse as well. An explosive caldera-forming eruption has never been witnessed first hand, but we know that they should pretty fearsome spectacles. Much smaller calderas atop effusive volcanoes (hawaiian style) have been observed. So, formation: maars form when a vent intersects groundwater and blasts out the overlying material.
One of only a dozen super volcanos in the world. When super volcanos explode it changes life on earth. The last time one went off was Mt. Toba 70,000 years ago. In more te â¦ chnical terms, the Yellowstone volcano is a caldera. Most Caldera volcanoes start out as stratovolcanoes, but this one appears to be an exception. Graham Howarth